It turns out, the disease results in an underactive thyroid gland, and can also disrupt your metabolism. Some of the symptoms include weight change and acne.

The 22-year-old said she had difficulty coming to terms with the breakouts she was getting:

"All my life I've always had great skin, so it was really devastating."

She also commented that her body seemed to fluctuate fairly drastically:

"Also, at first, I was losing a lot of weight, then I went on tour and I started gaining weight, and it was the most I'd ever gained in my life. I was, like, 115 pounds. Then when I filmed a movie last summer, I actually went under 100 pounds."

While all of the physical side-effects were upsetting, the former Nickelodeon star said her loved ones really helped her cope:

Is it just us, or does it totally look like Hugh Jackman is about to pounce on us with the fury of a thousand serious kisses in his new Men's Health UK cover?? LOLz!

We all know that Hugh is all about his body and fitness, as we constantly see him out and about with more muscles than we thought humans had! It's nice to see that health magazines are continuing to recognize the amount of effort he puts into being in the best shape he can be!

Jillian Michaels is not only one of the most popular authorities on fitness these days, but she's one of the most knowledgeable. The former Biggest Loser trainer is covering Health magazine's March issue to talk about why she takes fitness so seriously and why you should too!

Although a lot of people work out for strictly vanity or health reasons, Jillian began working out for just one — confidence. Now, a top celebrity trainer, Jillian uses fitness as a tool to give others the confidence they need to succeed in life, explaining:

It's true! Sofia Vergara is covering the December issue of Health magazine, available on newsstands this Friday, in which she opens up about working out with her personal trainer, her unhealthiest habit, and plastic surgery.

In order to keep her figure looking as good as it does, the voluptuous Modern Family actress hired celebrity trainer Gunnar Peterson to keep her motivated throughout her "paaaaaaainful" workouts, explaining:

In July, father John McCain was diagnosed with stage 4 glioblastoma, an aggressive form of brain cancer, which also claimed Beau's life.

When the 33-year-old began crying, the politician went over and consoled her, adding:

"There is hope... And if anybody can make it, your dad [can]."

Biden is also optimistic about "breakthroughs that are occurring now," regarding potential treatment options and cures.

"There's a lot of things happening. Any of you who have somebody who is diagnosed with gliobastoma, which is about as bad as it gets, there's breakthroughs that are occurring now... And it can happen tomorrow."